Grandfathered system
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Revision as of 07:47, 7 February 2006
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moved [[Grandfathered systems]] to [[Grandfathered system]]
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Radiojon (Talk | contribs)
moved [[Grandfathered systems]] to [[Grandfathered system]]
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Current revision
Grandfathered systems: Telecommunication systems that include, but not limited to:
(a) PBX and key telephone systems, directly connected to the public switched telephone network on June 1, 1978, that may remain permanently connected thereto without registration unless subsequently modified, and
(b) systems that are of the same type as those connected to the public switched telephone network on July 1, 1978, that were added before January 1, 1980, and that may remain permanently connected thereto without registration unless subsequently modified.